Well, the good thing about adjustable airflow is you can get it the way you like.
BUT, one days of these you may be sitting around with a fellow vaper comparing hardware. You may find yourself in a just for fun cloud contest.
Fill up with a high VG juice, Crank up the voltage, increase airflow and make some huge clouds just because you can
maybe not practical for everyday vaping but it can be fun.
And yea, on the steeping give it time it varies alot. The flavors and the compelxity of the blend vary greatly too.
Something simple thats say just Green Apple, will probably be ready to go within hours of making it. Its just a single flavor and maybe a bit of sweetner.
But something more complex with fruit, creams etc will take longer.
I've noticed that creams tend to take a few days to devolop when mixed with fruits etc,. Tobaccos tend to take weeks. 3,4 or more.
Coconut is another of those odd flavors in regards to steep time. . Even at low percentages in the first couple days tends to overpower some of the other flavors. After 5 days or so it mellows out and fall into the background and lets the other notes come forward.
Typically the more complex, the more steep time.
Sadly, with Vendor juices alot of times you won't really know how complex it really is.
I'd give them a week. Then try them. If they are improving there's promise.
But even if they aren't something you can try before trashing it is mix a little with something else and try again. Maybe steep a little longer. You'd be surprised what may come out. Sometimes 2 bad tasting juices can make 1 tasty one.
Sometimes its so just really bad though.